<PAGE> PAGE 1
000 A000000 03/31/2000
000 C000000 0000200489
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 MFS SERIES TRUST V
001 B000000 811-2031
001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02116
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 5
007 C010100 1
007 C020100 MFS TOTAL RETURN FUND
007 C030100 N
007 C010200 2
007 C020200 MFS RESEARCH FUND
007 C030200 N
007 C010300 3
007 C020300 MFS INTERNATIONAL OPPORTUNITIES FUND
007 C030300 N
007 C010400 4
007 C020400 MFS INTERNATIONAL STRATEGIC GROWTH FUND
007 C030400 N
007 C010500 5
007 C020500 MFS INTERNATIONAL VALUE FUND
007 C030500 N
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
008 B00AA01 A
008 C00AA01 801-17352
008 D01AA01 BOSTON
008 D02AA01 MA
008 D03AA01 02116
010 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
010 B00AA01 801-17352
010 C01AA01 BOSTON
<PAGE> PAGE 2
010 C02AA01 MA
010 C03AA01 02116
011 A00AA01 MFS FUND DISTRIBUTORS, INC.
011 B00AA01 8-27864
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02116
012 A00AA01 MFS SERVICE CENTER, INC.
012 B00AA01 84-1316
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02111
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 72
019 C00AA00 MASSFINSER
020 A000001 DOLANDSON, LUFKIN & JENRETTE SECURITIES CORP.
020 B000001 13-2741729
020 C000001 1364
020 A000002 MERRILL LYNCH PIERCE FENNER & SMITH
020 B000002 13-5674085
020 C000002 973
020 A000003 SALOMON SMITH BARNEY, INC. - CITIGROUP
020 B000003 13-1912900
020 C000003 858
020 A000004 MORGAN STANLEY DEAN WITTER
020 B000004 13-2655998
020 C000004 769
020 A000005 LEHMAN BROTHERS HOLDINGS, INC.
020 B000005 13-2518466
020 C000005 531
020 A000006 BEAR STEARNS SECURITIES CORP.
020 B000006 13-3299429
020 C000006 505
020 A000007 PRUDENTIAL SECURITIES, INC.
020 B000007 22-2347336
020 C000007 467
020 A000008 GOLDMAN SACHS & CO.ES, INC.
020 B000008 13-5108880
020 C000008 453
020 A000009 DB CLEARING SERVICES
020 B000009 00-0000000
020 C000009 444
020 A000010 AG EDWARDS & SONS, INC.
020 B000010 43-0895447
020 C000010 428
021 000000 6792
022 A000001 ASSOCIATED SECURITIES CORP.
022 B000001 95-3793471
022 C000001 5835259
022 D000001 0
<PAGE> PAGE 3
022 A000002 PRUDENTIAL SECURITIES, INC.
022 B000002 22-2347336
022 C000002 2993898
022 D000002 43942
022 A000003 CARROL MC ENTEE
022 B000003 00-0000000
022 C000003 2026633
022 D000003 363048
022 A000004 SALOMON SMITH BARNEY, INC. - CITIGROUP
022 B000004 13-1912900
022 C000004 1549362
022 D000004 658758
022 A000005 LEHMAN BROTHERS, INC.
022 B000005 13-2518466
022 C000005 1690975
022 D000005 327402
022 A000006 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000006 13-5674085
022 C000006 900295
022 D000006 466292
022 A000007 MORGAN STANLEY DEAN WITTER
022 B000007 13-2655998
022 C000007 1181571
022 D000007 148021
022 A000008 CHASE SECURITIES
022 B000008 13-3112953
022 C000008 1170231
022 D000008 154688
022 A000009 GOLDMAN SACHS & CO.
022 B000009 13-5108880
022 C000009 935373
022 D000009 176624
022 A000010 CS FIRST BOSTON
022 B000010 13-5659485
022 C000010 710327
022 D000010 178033
023 C000000 23438787
023 D000000 3872117
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 Y
026 G020000 Y
026 H000000 N
027 000000 Y
054 A00AA00 Y
054 B00AA00 N
054 C00AA00 N
<PAGE> PAGE 4
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 N
058 A00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 1000
077 A000000 N
078 000000 N
080 C00AA00 0
081 B00AA00 0
082 B00AA00 0
083 B00AA00 0
084 B00AA00 0
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
086 A01AA00 0
086 A02AA00 0
086 B01AA00 0
086 B02AA00 0
086 C01AA00 0
086 C02AA00 0
086 D01AA00 0
086 D02AA00 0
086 E01AA00 0
086 E02AA00 0
086 F01AA00 0
086 F02AA00 0
013 A000101 DELOITTE & TOUCHE LLP
013 B010101 BOSTON
013 B020101 MA
<PAGE> PAGE 5
013 B030101 02116
013 B040101 5022
015 A000101 STATE STREET BANK & TRUST
015 B000101 C
015 C010101 BOSTON
015 C020101 MA
015 C030101 02110
015 E010101 X
015 A000102 CHASE MANHATTAN BANK, N.A
015 B000102 S
015 C010102 NEW YORK
015 C020102 NY
015 C030102 10081
015 E040102 X
015 A000103 BANK OF NEW YORK
015 B000103 S
015 C010103 NEW YORK
015 C020103 MA
015 C030103 10286
015 E010103 X
024 000100 Y
025 A000101 CHASE SECURITIES, INC.
025 B000101 13-3112953
025 C000101 E
025 D000101 7176
025 A000102 EDWARDS (A.G.) & SONS, INC.
025 B000102 43-0895447
025 C000102 E
025 D000102 32916
025 A000103 MERRILL LYNCH PIERCE FENNER & SMITH
025 B000103 13-5674085
025 C000103 E
025 D000103 22943
025 A000104 MORGAN STANLEY DEAN WITTER
025 B000104 13-2655998
025 C000104 E
025 D000104 734
025 A000105 CHASE SECURITIES, INC.
025 B000105 13-3112953
025 C000105 D
025 D000105 2407
025 A000106 BEAR STEARNS SECURITIES CORP.
025 B000106 13-3299429
025 C000106 D
025 D000106 11334
025 A000107 CHASE SECURITIES, INC.
025 B000107 13-3112953
025 C000107 D
025 D000107 7832
025 A000108 MERRILL LYNCH PIERCE FENNER & SMITH
025 B000108 13-5674085
<PAGE> PAGE 6
025 C000108 D
025 D000108 3798
025 A000109 MERRILL LYNCH PIERCE FENNER SMITH
025 B000109 13-5674085
025 C000109 D
025 D000109 17
025 A000110 ASSOCIATES CORP N.A.
025 B000110 00-000000
025 C000110 D
025 D000110 883
025 A000111 MERRILL LYNCH PIERCE FENNER & SMITH
025 B000111 13-5674085
025 C000111 D
025 D000111 13164
025 A000112 MORGAN STANLEY DEAN WITTER
025 B000112 13-2655998
025 C000112 D
025 D000112 9537
025 A000113 SALOMON SMITH BARNEY, INC.
025 B000113 13-1912900
025 C000113 E
025 D000113 5610
025 A000114 ASSOCIATES CORP. N.A.
025 B000114 00-0000000
025 C000114 D
025 D000114 37387
025 A000115 GOLDMAN SACHS & CO.
025 B000115 13-5108880
025 C000115 D
025 D000115 5081
025 D000116 0
028 A010100 174013
028 A020100 13135
028 A030100 0
028 A040100 191071
028 B010100 129879
028 B020100 13420
028 B030100 0
028 B040100 205311
028 C010100 142400
028 C020100 387179
028 C030100 0
028 C040100 252327
028 D010100 181378
028 D020100 14794
028 D030100 0
028 D040100 335185
028 E010100 109511
028 E020100 13855
028 E030100 0
028 E040100 280998
<PAGE> PAGE 7
028 F010100 149395
028 F020100 13409
028 F030100 0
028 F040100 363301
028 G010100 886576
028 G020100 455792
028 G030100 0
028 G040100 1628193
028 H000100 681306
029 000100 Y
030 A000100 2940
030 B000100 4.75
030 C000100 0.00
031 A000100 375
031 B000100 0
032 000100 2565
033 000100 0
034 000100 Y
035 000100 2080
036 A000100 N
036 B000100 0
037 000100 N
038 000100 0
039 000100 N
040 000100 Y
041 000100 Y
042 A000100 0
042 B000100 0
042 C000100 50
042 D000100 50
042 E000100 0
042 F000100 0
042 G000100 0
042 H000100 0
043 000100 19319
044 000100 0
045 000100 Y
046 000100 N
047 000100 N
048 000100 0.000
048 A010100 0
048 A020100 0.000
048 B010100 0
048 B020100 0.000
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
048 E010100 0
048 E020100 0.000
048 F010100 0
<PAGE> PAGE 8
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 0
048 K020100 0.000
049 000100 N
050 000100 Y
051 000100 N
052 000100 N
053 A000100 Y
053 B000100 N
053 C000100 Y
055 A000100 N
055 B000100 N
056 000100 Y
057 000100 N
062 A000100 N
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 0.0
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 0.0
066 A000100 Y
066 B000100 N
066 C000100 N
066 D000100 N
066 E000100 N
066 F000100 N
066 G000100 Y
067 000100 Y
068 A000100 N
<PAGE> PAGE 9
068 B000100 N
069 000100 N
070 A010100 Y
070 A020100 N
070 B010100 Y
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 Y
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 Y
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 Y
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 Y
070 K010100 Y
070 K020100 Y
070 L010100 Y
070 L020100 Y
070 M010100 Y
070 M020100 Y
070 N010100 Y
070 N020100 Y
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 3321634
071 B000100 3863599
071 C000100 6022920
071 D000100 55
072 A000100 6
072 B000100 92668
072 C000100 40968
072 D000100 0
072 E000100 -312
072 F000100 10746
072 G000100 136
072 H000100 0
072 I000100 3114
<PAGE> PAGE 10
072 J000100 741
072 K000100 334
072 L000100 171
072 M000100 63
072 N000100 0
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 1
072 S000100 3
072 T000100 19308
072 U000100 0
072 V000100 0
072 W000100 1644
072 X000100 36261
072 Y000100 442
072 Z000100 97505
072AA000100 29407
072BB000100 0
072CC010100 118727
072CC020100 0
072DD010100 59317
072DD020100 28229
072EE000100 413711
073 A010100 0.2300
073 A020100 0.1900
073 B000100 0.9400
073 C000100 0.0000
074 A000100 496
074 B000100 0
074 C000100 37387
074 D000100 2305603
074 E000100 171352
074 F000100 3372931
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 34029
074 K000100 0
074 L000100 51859
074 M000100 94
074 N000100 5973751
074 O000100 31763
074 P000100 173
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 18264
074 S000100 0
074 T000100 5923551
<PAGE> PAGE 11
074 U010100 246502
074 U020100 139196
074 V010100 14.03
074 V020100 14.02
074 W000100 0.0000
074 X000100 337481
074 Y000100 0
075 A000100 0
075 B000100 6213022
076 000100 0.00
013 A000201 DELOITTE & TOUCHE LLP
013 B010201 BOSTON
013 B020201 MA
013 B030201 02116
013 B040201 5022
015 A000201 STATE STREET BANK & TRUST
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02110
015 E010201 X
015 A000202 CHASE MANHATTAN BANK, N.A.
015 B000202 S
015 C010202 NEW YORK
015 C020202 NY
015 C030202 10081
015 E040202 X
015 A000203 BANK OF NEW YORK
015 B000203 S
015 C010203 NEW YORK
015 C020203 NY
015 C030203 10286
015 E010203 X
024 000200 Y
025 A000201 CHASE SECURITIES
025 B000201 13-3112953
025 C000201 E
025 D000201 64546
025 A000202 LEHMAN BROTHERS
025 B000202 13-2518466
025 C000202 E
025 D000202 20389
025 A000203 MERRILL LYNCH PIERCE FENNER & SMITH
025 B000203 13-5674085
025 C000203 E
025 D000203 86289
025 A000204 MORGAN STANLEY DEAN WITTER & CO.
025 B000204 13-2655998
025 C000204 E
025 D000204 42233
025 A000205 ASSOCIATES N.A.
<PAGE> PAGE 12
025 B000205 00-0000000
025 C000205 E
025 D000205 53492
025 D000206 0
025 D000207 0
025 D000208 0
028 A010200 400610
028 A020200 2
028 A030200 0
028 A040200 393814
028 B010200 361131
028 B020200 1257
028 B030200 0
028 B040200 488489
028 C010200 475618
028 C020200 457521
028 C030200 0
028 C040200 458042
028 D010200 454065
028 D020200 1
028 D030200 0
028 D040200 437133
028 E010200 484929
028 E020200 11
028 E030200 0
028 E040200 610079
028 F010200 565898
028 F020200 9
028 F030200 0
028 F040200 651503
028 G010200 2742251
028 G020200 458801
028 G030200 0
028 G040200 3039060
028 H000200 2346739
029 000200 Y
030 A000200 3021
030 B000200 5.75
030 C000200 0.00
031 A000200 369
031 B000200 0
032 000200 2652
033 000200 0
034 000200 Y
035 000200 2194
036 A000200 N
036 B000200 0
037 000200 N
038 000200 0
039 000200 N
040 000200 Y
<PAGE> PAGE 13
041 000200 Y
042 A000200 0
042 B000200 0
042 C000200 52
042 D000200 48
042 E000200 0
042 F000200 0
042 G000200 0
042 H000200 0
043 000200 25640
044 000200 0
045 000200 Y
046 000200 N
047 000200 Y
048 000200 0.430
048 A010200 0
048 A020200 0.000
048 B010200 0
048 B020200 0.000
048 C010200 0
048 C020200 0.000
048 D010200 0
048 D020200 0.000
048 E010200 0
048 E020200 0.000
048 F010200 0
048 F020200 0.000
048 G010200 0
048 G020200 0.000
048 H010200 0
048 H020200 0.000
048 I010200 0
048 I020200 0.000
048 J010200 0
048 J020200 0.000
048 K010200 0
048 K020200 0.000
049 000200 N
050 000200 N
051 000200 N
052 000200 N
053 A000200 Y
053 B000200 N
053 C000200 Y
055 A000200 N
055 B000200 Y
056 000200 Y
057 000200 N
062 A000200 N
062 B000200 0.0
062 C000200 0.0
<PAGE> PAGE 14
062 D000200 0.0
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 0
063 B000200 0.0
066 A000200 Y
066 B000200 N
066 C000200 N
066 D000200 N
066 E000200 Y
066 F000200 N
066 G000200 N
067 000200 N
068 A000200 N
068 B000200 N
069 000200 N
070 A010200 Y
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 Y
070 L010200 Y
<PAGE> PAGE 15
070 L020200 Y
070 M010200 Y
070 M020200 Y
070 N010200 Y
070 N020200 Y
070 O010200 Y
070 O020200 Y
070 P010200 Y
070 P020200 N
070 Q010200 N
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 4072939
071 B000200 4256491
071 C000200 7175510
071 D000200 57
072 A000200 6
072 B000200 5132
072 C000200 26526
072 D000200 0
072 E000200 -206
072 F000200 15926
072 G000200 136
072 H000200 0
072 I000200 3704
072 J000200 1039
072 K000200 356
072 L000200 113
072 M000200 51
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 16
072 S000200 3
072 T000200 25671
072 U000200 0
072 V000200 0
072 W000200 1110
072 X000200 48125
072 Y000200 727
072 Z000200 -15946
072AA000200 773495
072BB000200 0
072CC010200 1318840
072CC020200 0
072DD010200 0
072DD020200 0
072EE000200 546597
073 A010200 0.0000
<PAGE> PAGE 16
073 A020200 0.0000
073 B000200 2.1400
073 C000200 0.0000
074 A000200 87
074 B000200 0
074 C000200 20956
074 D000200 0
074 E000200 0
074 F000200 8144693
074 G000200 0
074 H000200 0
074 I000200 567186
074 J000200 176134
074 K000200 0
074 L000200 82537
074 M000200 79
074 N000200 8991672
074 O000200 114351
074 P000200 274
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 650446
074 S000200 0
074 T000200 8226601
074 U010200 121465
074 U020200 115528
074 V010200 31.45
074 V020200 30.23
074 W000200 0.0000
074 X000200 407576
074 Y000200 0
075 A000200 0
075 B000200 7382394
076 000200 0.00
013 A000301 ERNST & YOUNG LLP
013 B010301 BOSTON
013 B020301 MA
013 B030301 02116
015 A000301 STATE STREET BANK & TRUST
015 B000301 C
015 C010301 BOSTON
015 C020301 MA
015 C030301 02110
015 E010301 X
015 A000302 STATE STREET BANK & TRUST
015 B000302 S
015 C010302 BOSTON
015 C020302 MA
015 C030302 02110
<PAGE> PAGE 17
015 E040302 X
015 A000303 BANK OF NEW YORK
015 B000303 S
015 C010303 NEW YORK
015 C020303 NY
015 C030303 10286
015 E010303 X
024 000300 N
025 D000301 0
025 D000302 0
025 D000303 0
025 D000304 0
025 D000305 0
025 D000306 0
025 D000307 0
025 D000308 0
028 A010300 57
028 A020300 0
028 A030300 0
028 A040300 0
028 B010300 4
028 B020300 0
028 B030300 0
028 B040300 72
028 C010300 167
028 C020300 236
028 C030300 0
028 C040300 2
028 D010300 76
028 D020300 0
028 D030300 0
028 D040300 3
028 E010300 77
028 E020300 0
028 E030300 0
028 E040300 31
028 F010300 23
028 F020300 0
028 F030300 0
028 F040300 59
028 G010300 404
028 G020300 236
028 G030300 0
028 G040300 167
028 H000300 18
029 000300 N
030 A000300 0
030 B000300 0.00
030 C000300 0.00
031 A000300 0
031 B000300 0
<PAGE> PAGE 18
032 000300 0
033 000300 0
034 000300 N
035 000300 0
036 B000300 0
037 000300 N
038 000300 0
039 000300 N
040 000300 Y
041 000300 N
042 A000300 0
042 B000300 0
042 C000300 0
042 D000300 0
042 E000300 0
042 F000300 0
042 G000300 0
042 H000300 0
043 000300 0
044 000300 0
045 000300 Y
046 000300 N
047 000300 Y
048 000300 0.000
048 A010300 500000
048 A020300 0.975
048 B010300 0
048 B020300 0.000
048 C010300 0
048 C020300 0.000
048 D010300 0
048 D020300 0.000
048 E010300 0
048 E020300 0.000
048 F010300 0
048 F020300 0.000
048 G010300 0
048 G020300 0.000
048 H010300 0
048 H020300 0.000
048 I010300 0
048 I020300 0.000
048 J010300 0
048 J020300 0.000
048 K010300 500000
048 K020300 0.925
049 000300 N
050 000300 N
051 000300 N
052 000300 N
053 A000300 Y
<PAGE> PAGE 19
053 B000300 Y
053 C000300 Y
055 A000300 Y
055 B000300 Y
056 000300 Y
057 000300 N
062 A000300 N
062 B000300 0.0
062 C000300 0.0
062 D000300 0.0
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 0.0
062 N000300 0.0
062 O000300 0.0
062 P000300 0.0
062 Q000300 0.0
062 R000300 0.0
063 A000300 0
063 B000300 0.0
066 A000300 Y
066 B000300 N
066 C000300 Y
066 D000300 N
066 E000300 N
066 F000300 N
066 G000300 N
067 000300 N
068 A000300 N
068 B000300 Y
069 000300 N
070 A010300 Y
070 A020300 N
070 B010300 Y
070 B020300 N
070 C010300 Y
070 C020300 N
070 D010300 Y
070 D020300 N
070 E010300 Y
070 E020300 N
070 F010300 Y
070 F020300 N
070 G010300 Y
070 G020300 N
<PAGE> PAGE 20
070 H010300 Y
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 Y
070 K020300 N
070 L010300 Y
070 L020300 Y
070 M010300 Y
070 M020300 Y
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 Y
070 R020300 N
071 A000300 1358
071 B000300 1079
071 C000300 1550
071 D000300 70
072 A000300 6
072 B000300 2
072 C000300 6
072 D000300 0
072 E000300 -1
072 F000300 8
072 G000300 0
072 H000300 0
072 I000300 1
072 J000300 5
072 K000300 0
072 L000300 3
072 M000300 0
072 N000300 0
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 10
072 S000300 0
072 T000300 0
072 U000300 0
072 V000300 0
072 W000300 2
072 X000300 29
072 Y000300 15
<PAGE> PAGE 21
072 Z000300 -7
072AA000300 179
072BB000300 0
072CC010300 477
072CC020300 0
072DD010300 0
072DD020300 0
072EE000300 236
073 A010300 0.0000
073 A020300 0.0000
073 B000300 2.5100
073 C000300 0.0000
074 A000300 3
074 B000300 0
074 C000300 0
074 D000300 0
074 E000300 0
074 F000300 2016
074 G000300 0
074 H000300 0
074 I000300 0
074 J000300 24
074 K000300 0
074 L000300 4
074 M000300 1
074 N000300 2048
074 O000300 55
074 P000300 0
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 0
074 S000300 0
074 T000300 1993
074 U010300 7
074 U020300 109
074 V010300 17.15
074 V020300 17.16
074 W000300 0.0000
074 X000300 69
074 Y000300 0
075 A000300 0
075 B000300 1604
076 000300 0.00
013 A000401 ERNST & YOUNG LLP
013 B010401 BOSTON
013 B020401 MA
013 B030401 02116
015 A000401 STATE STREET BANK & TRUST
015 B000401 C
<PAGE> PAGE 22
015 C010401 BOSTON
015 C020401 MA
015 C030401 02110
015 E010401 X
015 A000402 STATE STREET BANK & TRUST
015 B000402 S
015 C010402 BOSTON
015 C020402 MA
015 C030402 02110
015 E040402 X
015 A000403 BANK OF NEW YORK
015 B000403 S
015 C010403 NEW YORK
015 C020403 NY
015 C030403 10286
015 E010403 X
024 000400 N
025 D000401 0
025 D000402 0
025 D000403 0
025 D000404 0
025 D000405 0
025 D000406 0
025 D000407 0
025 D000408 0
028 A010400 19
028 A020400 0
028 A030400 0
028 A040400 7
028 B010400 76
028 B020400 0
028 B030400 0
028 B040400 1
028 C010400 118
028 C020400 277
028 C030400 0
028 C040400 0
028 D010400 53
028 D020400 0
028 D030400 0
028 D040400 0
028 E010400 59
028 E020400 0
028 E030400 0
028 E040400 5
028 F010400 2
028 F020400 0
028 F030400 0
028 F040400 10
028 G010400 327
028 G020400 277
<PAGE> PAGE 23
028 G030400 0
028 G040400 23
028 H000400 19
029 000400 N
030 A000400 0
030 B000400 0.00
030 C000400 0.00
031 A000400 0
031 B000400 0
032 000400 0
033 000400 0
034 000400 N
035 000400 0
036 B000400 0
037 000400 N
038 000400 0
039 000400 N
040 000400 Y
041 000400 N
042 A000400 0
042 B000400 0
042 C000400 0
042 D000400 0
042 E000400 0
042 F000400 0
042 G000400 0
042 H000400 0
043 000400 0
044 000400 0
045 000400 Y
046 000400 N
047 000400 Y
048 000400 0.000
048 A010400 500000
048 A020400 0.975
048 B010400 0
048 B020400 0.000
048 C010400 0
048 C020400 0.000
048 D010400 0
048 D020400 0.000
048 E010400 0
048 E020400 0.000
048 F010400 0
048 F020400 0.000
048 G010400 0
048 G020400 0.000
048 H010400 0
048 H020400 0.000
048 I010400 0
048 I020400 0.000
<PAGE> PAGE 24
048 J010400 0
048 J020400 0.000
048 K010400 500000
048 K020400 0.925
049 000400 N
050 000400 N
051 000400 N
052 000400 N
053 A000400 Y
053 B000400 Y
053 C000400 Y
055 A000400 Y
055 B000400 N
056 000400 Y
057 000400 N
062 A000400 N
062 B000400 0.0
062 C000400 0.0
062 D000400 0.0
062 E000400 0.0
062 F000400 0.0
062 G000400 0.0
062 H000400 0.0
062 I000400 0.0
062 J000400 0.0
062 K000400 0.0
062 L000400 0.0
062 M000400 0.0
062 N000400 0.0
062 O000400 0.0
062 P000400 0.0
062 Q000400 0.0
062 R000400 0.0
063 A000400 0
063 B000400 0.0
066 A000400 Y
066 B000400 N
066 C000400 Y
066 D000400 N
066 E000400 N
066 F000400 N
066 G000400 N
067 000400 N
068 A000400 N
068 B000400 Y
069 000400 N
070 A010400 Y
070 A020400 N
070 B010400 Y
070 B020400 N
070 C010400 Y
<PAGE> PAGE 25
070 C020400 N
070 D010400 Y
070 D020400 N
070 E010400 Y
070 E020400 N
070 F010400 Y
070 F020400 N
070 G010400 Y
070 G020400 N
070 H010400 Y
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 Y
070 K010400 Y
070 K020400 N
070 L010400 Y
070 L020400 Y
070 M010400 Y
070 M020400 Y
070 N010400 Y
070 N020400 N
070 O010400 Y
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 N
070 R020400 N
071 A000400 1144
071 B000400 900
071 C000400 1579
071 D000400 57
072 A000400 6
072 B000400 2
072 C000400 9
072 D000400 0
072 E000400 -1
072 F000400 8
072 G000400 0
072 H000400 0
072 I000400 1
072 J000400 6
072 K000400 0
072 L000400 2
072 M000400 0
072 N000400 0
072 O000400 0
072 P000400 0
<PAGE> PAGE 26
072 Q000400 0
072 R000400 10
072 S000400 0
072 T000400 1
072 U000400 0
072 V000400 0
072 W000400 1
072 X000400 29
072 Y000400 14
072 Z000400 -5
072AA000400 160
072BB000400 0
072CC010400 267
072CC020400 0
072DD010400 0
072DD020400 1
072EE000400 276
073 A010400 0.0100
073 A020400 0.0100
073 B000400 2.5600
073 C000400 0.0000
074 A000400 8
074 B000400 0
074 C000400 80
074 D000400 0
074 E000400 0
074 F000400 1877
074 G000400 0
074 H000400 0
074 I000400 0
074 J000400 65
074 K000400 0
074 L000400 5
074 M000400 1
074 N000400 2036
074 O000400 42
074 P000400 0
074 Q000400 0
074 R010400 0
074 R020400 0
074 R030400 0
074 R040400 0
074 S000400 0
074 T000400 1994
074 U010400 23
074 U020400 113
074 V010400 14.57
074 V020400 14.61
074 W000400 0.0000
074 X000400 74
074 Y000400 0
<PAGE> PAGE 27
075 A000400 0
075 B000400 1664
076 000400 0.00
013 A000501 ERNST & YOUNG LLP
013 B010501 BOSTON
013 B020501 MA
013 B030501 02116
015 A000501 STATE STREET BANK & TRUST
015 B000501 C
015 C010501 BOSTON
015 C020501 MA
015 C030501 02110
015 E010501 X
015 A000502 STATE STREET BANK & TRUST
015 B000502 S
015 C010502 BOSTON
015 C020502 MA
015 C030502 02110
015 E040502 X
015 A000503 BANK OF NEW YORK
015 B000503 S
015 C010503 NEW YORK
015 C020503 NY
015 C030503 10286
015 E010503 X
024 000500 Y
025 A000501 GOLDMAN SACHS & CO., INC.
025 B000501 13-5108880
025 C000501 E
025 D000501 5
025 A000502 MERRILL LYNCH
025 B000502 13-5674085
025 C000502 E
025 D000502 10
025 D000503 0
025 D000504 0
025 D000505 0
025 D000506 0
025 D000507 0
025 D000508 0
028 A010500 5
028 A020500 0
028 A030500 0
028 A040500 0
028 B010500 46
028 B020500 0
028 B030500 0
028 B040500 60
028 C010500 0
028 C020500 231
028 C030500 0
<PAGE> PAGE 28
028 C040500 280
028 D010500 0
028 D020500 0
028 D030500 0
028 D040500 0
028 E010500 0
028 E020500 0
028 E030500 0
028 E040500 41
028 F010500 0
028 F020500 0
028 F030500 0
028 F040500 0
028 G010500 51
028 G020500 231
028 G030500 0
028 G040500 381
028 H000500 0
029 000500 N
030 A000500 0
030 B000500 0.00
030 C000500 0.00
031 A000500 0
031 B000500 0
032 000500 0
033 000500 0
034 000500 N
035 000500 0
036 B000500 0
037 000500 N
038 000500 0
039 000500 N
040 000500 Y
041 000500 N
042 A000500 0
042 B000500 0
042 C000500 0
042 D000500 0
042 E000500 0
042 F000500 0
042 G000500 0
042 H000500 0
043 000500 0
044 000500 0
045 000500 Y
046 000500 N
047 000500 Y
048 000500 0.000
048 A010500 500000
048 A020500 0.975
048 B010500 0
<PAGE> PAGE 29
048 B020500 0.000
048 C010500 0
048 C020500 0.000
048 D010500 0
048 D020500 0.000
048 E010500 0
048 E020500 0.000
048 F010500 0
048 F020500 0.000
048 G010500 0
048 G020500 0.000
048 H010500 0
048 H020500 0.000
048 I010500 0
048 I020500 0.000
048 J010500 0
048 J020500 0.000
048 K010500 500000
048 K020500 0.925
049 000500 N
050 000500 N
051 000500 N
052 000500 N
053 A000500 Y
053 B000500 Y
053 C000500 Y
055 A000500 N
055 B000500 N
056 000500 Y
057 000500 N
062 A000500 N
062 B000500 0.0
062 C000500 0.0
062 D000500 0.0
062 E000500 0.0
062 F000500 0.0
062 G000500 0.0
062 H000500 0.0
062 I000500 0.0
062 J000500 0.0
062 K000500 0.0
062 L000500 0.0
062 M000500 0.0
062 N000500 0.0
062 O000500 0.0
062 P000500 0.0
062 Q000500 0.0
062 R000500 0.0
063 A000500 0
063 B000500 0.0
066 A000500 Y
<PAGE> PAGE 30
066 B000500 N
066 C000500 Y
066 D000500 N
066 E000500 N
066 F000500 N
066 G000500 N
067 000500 N
068 A000500 N
068 B000500 Y
069 000500 N
070 A010500 Y
070 A020500 N
070 B010500 Y
070 B020500 N
070 C010500 Y
070 C020500 N
070 D010500 Y
070 D020500 N
070 E010500 Y
070 E020500 N
070 F010500 Y
070 F020500 N
070 G010500 Y
070 G020500 N
070 H010500 Y
070 H020500 N
070 I010500 N
070 I020500 N
070 J010500 Y
070 J020500 N
070 K010500 Y
070 K020500 N
070 L010500 Y
070 L020500 Y
070 M010500 Y
070 M020500 Y
070 N010500 Y
070 N020500 N
070 O010500 Y
070 O020500 Y
070 P010500 Y
070 P020500 N
070 Q010500 N
070 Q020500 N
070 R010500 N
070 R020500 N
071 A000500 335
071 B000500 720
071 C000500 996
071 D000500 34
072 A000500 6
<PAGE> PAGE 31
072 B000500 1
072 C000500 9
072 D000500 0
072 E000500 0
072 F000500 5
072 G000500 0
072 H000500 0
072 I000500 1
072 J000500 4
072 K000500 0
072 L000500 1
072 M000500 0
072 N000500 2
072 O000500 0
072 P000500 0
072 Q000500 0
072 R000500 10
072 S000500 0
072 T000500 2
072 U000500 0
072 V000500 0
072 W000500 0
072 X000500 25
072 Y000500 16
072 Z000500 1
072AA000500 102
072BB000500 0
072CC010500 93
072CC020500 0
072DD010500 4
072DD020500 0
072EE000500 227
073 A010500 0.0700
073 A020500 0.0700
073 B000500 3.2300
073 C000500 0.0000
074 A000500 3
074 B000500 0
074 C000500 90
074 D000500 0
074 E000500 0
074 F000500 898
074 G000500 0
074 H000500 0
074 I000500 0
074 J000500 1
074 K000500 0
074 L000500 3
074 M000500 4
074 N000500 999
074 O000500 1
<PAGE> PAGE 32
074 P000500 0
074 Q000500 0
074 R010500 0
074 R020500 0
074 R030500 0
074 R040500 0
074 S000500 0
074 T000500 998
074 U010500 82
074 U020500 13
074 V010500 12.24
074 V020500 12.24
074 W000500 0.0000
074 X000500 8
074 Y000500 0
075 A000500 0
075 B000500 1053
076 000500 0.00
013 A000601 DELETE
015 A000601 DELETE
015 A000602 STATE STREET BANK & TRUST
015 B000602 S
015 C010602 BOSTON
015 C020602 MA
015 C030602 02110
015 E040602 X
015 A000603 BANK OF NEW YORK
015 B000603 S
015 C010603 NEW YORK
015 C020603 NY
015 C030603 10286
015 E010603 X
024 000600 N
025 D000601 0
025 D000602 0
025 D000603 0
025 D000604 0
025 D000605 0
025 D000606 0
025 D000607 0
025 D000608 0
028 A010600 0
028 A020600 0
028 A030600 0
028 A040600 0
028 B010600 0
028 B020600 0
028 B030600 0
028 B040600 0
028 C010600 0
028 C020600 0
<PAGE> PAGE 33
028 C030600 0
028 C040600 0
028 D010600 0
028 D020600 0
028 D030600 0
028 D040600 0
028 E010600 0
028 E020600 0
028 E030600 0
028 E040600 0
028 F010600 0
028 F020600 0
028 F030600 0
028 F040600 0
028 G010600 0
028 G020600 0
028 G030600 0
028 G040600 0
028 H000600 0
030 A000600 0
030 B000600 0.00
030 C000600 0.00
031 A000600 0
031 B000600 0
032 000600 0
033 000600 0
035 000600 0
036 B000600 0
038 000600 0
042 A000600 0
042 B000600 0
042 C000600 0
042 D000600 0
042 E000600 0
042 F000600 0
042 G000600 0
042 H000600 0
043 000600 0
044 000600 0
045 000600 N
048 000600 0.000
048 A010600 0
048 A020600 0.000
048 B010600 0
048 B020600 0.000
048 C010600 0
048 C020600 0.000
048 D010600 0
048 D020600 0.000
048 E010600 0
048 E020600 0.000
<PAGE> PAGE 34
048 F010600 0
048 F020600 0.000
048 G010600 0
048 G020600 0.000
048 H010600 0
048 H020600 0.000
048 I010600 0
048 I020600 0.000
048 J010600 0
048 J020600 0.000
048 K010600 0
048 K020600 0.000
055 A000600 N
055 B000600 N
056 000600 N
057 000600 N
062 A000600 N
062 B000600 0.0
062 C000600 0.0
062 D000600 0.0
062 E000600 0.0
062 F000600 0.0
062 G000600 0.0
062 H000600 0.0
062 I000600 0.0
062 J000600 0.0
062 K000600 0.0
062 L000600 0.0
062 M000600 0.0
062 N000600 0.0
062 O000600 0.0
062 P000600 0.0
062 Q000600 0.0
062 R000600 0.0
063 A000600 0
063 B000600 0.0
066 A000600 N
067 000600 N
068 A000600 N
068 B000600 N
069 000600 N
070 A010600 N
070 A020600 N
070 B010600 N
070 B020600 N
070 C010600 N
070 C020600 N
070 D010600 N
070 D020600 N
070 E010600 N
070 E020600 N
<PAGE> PAGE 35
070 F010600 N
070 F020600 N
070 G010600 N
070 G020600 N
070 H010600 N
070 H020600 N
070 I010600 N
070 I020600 N
070 J010600 N
070 J020600 N
070 K010600 N
070 K020600 N
070 L010600 N
070 L020600 N
070 M010600 N
070 M020600 N
070 N010600 N
070 N020600 N
070 O010600 N
070 O020600 N
070 P010600 N
070 P020600 N
070 Q010600 N
070 Q020600 N
070 R010600 N
070 R020600 N
071 A000600 0
071 B000600 0
071 C000600 0
071 D000600 0
072 A000600 12
072 B000600 0
072 C000600 0
072 D000600 0
072 E000600 0
072 F000600 0
072 G000600 0
072 H000600 0
072 I000600 0
072 J000600 0
072 K000600 0
072 L000600 0
072 M000600 0
072 N000600 0
072 O000600 0
072 P000600 0
072 Q000600 0
072 R000600 0
072 S000600 0
072 T000600 0
072 U000600 0
<PAGE> PAGE 36
072 V000600 0
072 W000600 0
072 X000600 0
072 Y000600 0
072 Z000600 0
072AA000600 0
072BB000600 0
072CC010600 0
072CC020600 0
072DD010600 0
072DD020600 0
072EE000600 0
073 A010600 0.0000
073 A020600 0.0000
073 B000600 0.0000
073 C000600 0.0000
074 A000600 0
074 B000600 0
074 C000600 0
074 D000600 0
074 E000600 0
074 F000600 0
074 G000600 0
074 H000600 0
074 I000600 0
074 J000600 0
074 K000600 0
074 L000600 0
074 M000600 0
074 N000600 0
074 O000600 0
074 P000600 0
074 Q000600 0
074 R010600 0
074 R020600 0
074 R030600 0
074 R040600 0
074 S000600 0
074 T000600 0
074 U010600 0
074 U020600 0
074 V010600 0.00
074 V020600 0.00
074 W000600 0.0000
074 X000600 0
074 Y000600 0
075 A000600 0
075 B000600 0
076 000600 0.00
SIGNATURE JAMES O. YOST
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 011
<NAME> MFS TOTAL RETURN FUND CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5658195695
<INVESTMENTS-AT-VALUE> 5887272647
<RECEIVABLES> 85888450
<ASSETS-OTHER> 93651
<OTHER-ITEMS-ASSETS> 496194
<TOTAL-ASSETS> 5973750942
<PAYABLE-FOR-SECURITIES> 31763275
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18436747
<TOTAL-LIABILITIES> 50200022
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5688610254
<SHARES-COMMON-STOCK> 246501799
<SHARES-COMMON-PRIOR> 253842933
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (2863746)
<ACCUMULATED-NET-GAINS> 8729033
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 229075379
<NET-ASSETS> 5923550920
<DIVIDEND-INCOME> 40968369
<INTEREST-INCOME> 92667647
<OTHER-INCOME> (311876)
<EXPENSES-NET> (35819141)
<NET-INVESTMENT-INCOME> 97504999
<REALIZED-GAINS-CURRENT> 29406692
<APPREC-INCREASE-CURRENT> 118727320
<NET-CHANGE-FROM-OPS> 245639011
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (59316899)
<DISTRIBUTIONS-OF-GAINS> (236088862)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 48911547
<NUMBER-OF-SHARES-REDEEMED> (74985471)
<SHARES-REINVESTED> 18732790
<NET-CHANGE-IN-ASSETS> (548872619)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 393033256
<OVERDISTRIB-NII-PRIOR> (5393683)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10745469
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36261204
<AVERAGE-NET-ASSETS> 6213022404
<PER-SHARE-NAV-BEGIN> 14.57
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> 0.39
<PER-SHARE-DIVIDEND> (0.23)
<PER-SHARE-DISTRIBUTIONS> (0.94)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.03
<EXPENSE-RATIO> 0.89
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 012
<NAME> MFS TOTAL RETURN FUND CLASS B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5658195695
<INVESTMENTS-AT-VALUE> 5887272647
<RECEIVABLES> 85888450
<ASSETS-OTHER> 93651
<OTHER-ITEMS-ASSETS> 496194
<TOTAL-ASSETS> 5973750942
<PAYABLE-FOR-SECURITIES> 31763275
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18436747
<TOTAL-LIABILITIES> 50200022
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5688610254
<SHARES-COMMON-STOCK> 139195859
<SHARES-COMMON-PRIOR> 152175734
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (2863746)
<ACCUMULATED-NET-GAINS> 8729033
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 229075379
<NET-ASSETS> 5923550920
<DIVIDEND-INCOME> 40968369
<INTEREST-INCOME> 92667647
<OTHER-INCOME> (311876)
<EXPENSES-NET> (35819141)
<NET-INVESTMENT-INCOME> 97504999
<REALIZED-GAINS-CURRENT> 29406692
<APPREC-INCREASE-CURRENT> 118727320
<NET-CHANGE-FROM-OPS> 245639011
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (28229398)
<DISTRIBUTIONS-OF-GAINS> (141602847)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9892450
<NUMBER-OF-SHARES-REDEEMED> (34145179)
<SHARES-REINVESTED> 11272854
<NET-CHANGE-IN-ASSETS> (548872619)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 393033256
<OVERDISTRIB-NII-PRIOR> (5393683)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10745469
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36261204
<AVERAGE-NET-ASSETS> 6213022404
<PER-SHARE-NAV-BEGIN> 14.57
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 0.39
<PER-SHARE-DIVIDEND> (0.19)
<PER-SHARE-DISTRIBUTIONS> (0.94)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.02
<EXPENSE-RATIO> 1.53
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 013
<NAME> MFS TOTAL RETURN FUND CLASS C
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5658195695
<INVESTMENTS-AT-VALUE> 5887272647
<RECEIVABLES> 85888450
<ASSETS-OTHER> 93651
<OTHER-ITEMS-ASSETS> 496194
<TOTAL-ASSETS> 5973750942
<PAYABLE-FOR-SECURITIES> 31763275
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18436747
<TOTAL-LIABILITIES> 50200022
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5688610254
<SHARES-COMMON-STOCK> 33553247
<SHARES-COMMON-PRIOR> 34761005
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (2863746)
<ACCUMULATED-NET-GAINS> 8729033
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 229075379
<NET-ASSETS> 5923550920
<DIVIDEND-INCOME> 40968369
<INTEREST-INCOME> 92667647
<OTHER-INCOME> (311876)
<EXPENSES-NET> (35819141)
<NET-INVESTMENT-INCOME> 97504999
<REALIZED-GAINS-CURRENT> 29406692
<APPREC-INCREASE-CURRENT> 118727320
<NET-CHANGE-FROM-OPS> 245639011
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (6593868)
<DISTRIBUTIONS-OF-GAINS> (32927178)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4444973
<NUMBER-OF-SHARES-REDEEMED> (8202468)
<SHARES-REINVESTED> 2549737
<NET-CHANGE-IN-ASSETS> (548872619)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 393033256
<OVERDISTRIB-NII-PRIOR> (5393683)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10745469
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36261204
<AVERAGE-NET-ASSETS> 6213022404
<PER-SHARE-NAV-BEGIN> 14.61
<PER-SHARE-NII> 0.19
<PER-SHARE-GAIN-APPREC> 0.40
<PER-SHARE-DIVIDEND> (0.19)
<PER-SHARE-DISTRIBUTIONS> (0.94)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.07
<EXPENSE-RATIO> 1.53
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 014
<NAME> MFS TOTAL RETURN FUND CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5658195695
<INVESTMENTS-AT-VALUE> 5887272647
<RECEIVABLES> 85888450
<ASSETS-OTHER> 93651
<OTHER-ITEMS-ASSETS> 496194
<TOTAL-ASSETS> 5973750942
<PAYABLE-FOR-SECURITIES> 31763275
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18436747
<TOTAL-LIABILITIES> 50200022
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5688610254
<SHARES-COMMON-STOCK> 3040008
<SHARES-COMMON-PRIOR> 3295214
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (2863746)
<ACCUMULATED-NET-GAINS> 8729033
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 229075379
<NET-ASSETS> 5923550920
<DIVIDEND-INCOME> 40968369
<INTEREST-INCOME> 92667647
<OTHER-INCOME> (311876)
<EXPENSES-NET> (35819141)
<NET-INVESTMENT-INCOME> 97504999
<REALIZED-GAINS-CURRENT> 29406692
<APPREC-INCREASE-CURRENT> 118727320
<NET-CHANGE-FROM-OPS> 245639011
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (834897)
<DISTRIBUTIONS-OF-GAINS> (3092028)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 343477
<NUMBER-OF-SHARES-REDEEMED> (881327)
<SHARES-REINVESTED> 282644
<NET-CHANGE-IN-ASSETS> (548872619)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 393033256
<OVERDISTRIB-NII-PRIOR> (5393683)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10745469
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 36261204
<AVERAGE-NET-ASSETS> 6213022404
<PER-SHARE-NAV-BEGIN> 14.57
<PER-SHARE-NII> 0.26
<PER-SHARE-GAIN-APPREC> 0.40
<PER-SHARE-DIVIDEND> (0.26)
<PER-SHARE-DISTRIBUTIONS> (0.94)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.03
<EXPENSE-RATIO> 0.53
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 021
<NAME> MFS RESEARCH FUND - CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5628137572
<INVESTMENTS-AT-VALUE> 8165649561
<RECEIVABLES> 258670995
<ASSETS-OTHER> 66587
<OTHER-ITEMS-ASSETS> 567284751
<TOTAL-ASSETS> 8991671894
<PAYABLE-FOR-SECURITIES> 114351341
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 650719229
<TOTAL-LIABILITIES> 765070570
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4898327334
<SHARES-COMMON-STOCK> 121465183
<SHARES-COMMON-PRIOR> 119675882
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (16367699)
<ACCUMULATED-NET-GAINS> 809433432
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2535208257
<NET-ASSETS> 8226601324
<DIVIDEND-INCOME> 26526360
<INTEREST-INCOME> 5131965
<OTHER-INCOME> (206430)
<EXPENSES-NET> (47397596)
<NET-INVESTMENT-INCOME> (15945701)
<REALIZED-GAINS-CURRENT> 773495378
<APPREC-INCREASE-CURRENT> 1318839792
<NET-CHANGE-FROM-OPS> 2076389469
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (249638542)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 83070477
<NUMBER-OF-SHARES-REDEEMED> (89377112)
<SHARES-REINVESTED> 8095936
<NET-CHANGE-IN-ASSETS> 1691799749
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 582534965
<OVERDISTRIB-NII-PRIOR> (421998)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15925860
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 48125358
<AVERAGE-NET-ASSETS> 7382393721
<PER-SHARE-NAV-BEGIN> 25.58
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 8.02
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 31.45
<EXPENSE-RATIO> 0.96
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 022
<NAME> MFS RESEARCH FUND - CLASS B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5628137572
<INVESTMENTS-AT-VALUE> 8165649561
<RECEIVABLES> 258670995
<ASSETS-OTHER> 66587
<OTHER-ITEMS-ASSETS> 567284751
<TOTAL-ASSETS> 8991671894
<PAYABLE-FOR-SECURITIES> 114351341
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 650719229
<TOTAL-LIABILITIES> 765070570
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4898327334
<SHARES-COMMON-STOCK> 115528453
<SHARES-COMMON-PRIOR> 111314753
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (16367699)
<ACCUMULATED-NET-GAINS> 809433432
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2535208257
<NET-ASSETS> 8226601324
<DIVIDEND-INCOME> 26526360
<INTEREST-INCOME> 5131965
<OTHER-INCOME> (206430)
<EXPENSES-NET> (47397596)
<NET-INVESTMENT-INCOME> (15945701)
<REALIZED-GAINS-CURRENT> 773495378
<APPREC-INCREASE-CURRENT> 1318839792
<NET-CHANGE-FROM-OPS> 2076389469
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (235896495)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9253144
<NUMBER-OF-SHARES-REDEEMED> (12539023)
<SHARES-REINVESTED> 7499579
<NET-CHANGE-IN-ASSETS> 1691799749
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 582534965
<OVERDISTRIB-NII-PRIOR> (421998)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15925860
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 48125358
<AVERAGE-NET-ASSETS> 7382393721
<PER-SHARE-NAV-BEGIN> 24.74
<PER-SHARE-NII> (0.10)
<PER-SHARE-GAIN-APPREC> 7.73
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 30.23
<EXPENSE-RATIO> 1.61
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 023
<NAME> MFS RESEARCH FUND - CLASS C
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5628137572
<INVESTMENTS-AT-VALUE> 8165649561
<RECEIVABLES> 258670995
<ASSETS-OTHER> 66587
<OTHER-ITEMS-ASSETS> 567284751
<TOTAL-ASSETS> 8991671894
<PAYABLE-FOR-SECURITIES> 114351341
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 650719229
<TOTAL-LIABILITIES> 765070570
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4898327334
<SHARES-COMMON-STOCK> 29506926
<SHARES-COMMON-PRIOR> 28270737
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (16367699)
<ACCUMULATED-NET-GAINS> 809433432
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2535208257
<NET-ASSETS> 8226601324
<DIVIDEND-INCOME> 26526360
<INTEREST-INCOME> 5131965
<OTHER-INCOME> (206430)
<EXPENSES-NET> (47397596)
<NET-INVESTMENT-INCOME> (15945701)
<REALIZED-GAINS-CURRENT> 773495378
<APPREC-INCREASE-CURRENT> 1318839792
<NET-CHANGE-FROM-OPS> 2076389469
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (59513382)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5223867
<NUMBER-OF-SHARES-REDEEMED> (5609589)
<SHARES-REINVESTED> 1621911
<NET-CHANGE-IN-ASSETS> 1691799749
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 582534965
<OVERDISTRIB-NII-PRIOR> (421998)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15925860
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 48125358
<AVERAGE-NET-ASSETS> 7382393721
<PER-SHARE-NAV-BEGIN> 24.75
<PER-SHARE-NII> (0.10)
<PER-SHARE-GAIN-APPREC> 7.74
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 30.25
<EXPENSE-RATIO> 1.61
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 024
<NAME> MFS RESEARCH FUND - CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 5628137572
<INVESTMENTS-AT-VALUE> 8165649561
<RECEIVABLES> 258670995
<ASSETS-OTHER> 66587
<OTHER-ITEMS-ASSETS> 567284751
<TOTAL-ASSETS> 8991671894
<PAYABLE-FOR-SECURITIES> 114351341
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 650719229
<TOTAL-LIABILITIES> 765070570
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4898327334
<SHARES-COMMON-STOCK> 703593
<SHARES-COMMON-PRIOR> 756323
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (16367699)
<ACCUMULATED-NET-GAINS> 809433432
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2535208257
<NET-ASSETS> 8226601324
<DIVIDEND-INCOME> 26526360
<INTEREST-INCOME> 5131965
<OTHER-INCOME> (206430)
<EXPENSES-NET> (47397596)
<NET-INVESTMENT-INCOME> (15945701)
<REALIZED-GAINS-CURRENT> 773495378
<APPREC-INCREASE-CURRENT> 1318839792
<NET-CHANGE-FROM-OPS> 2076389469
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (1548492)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 38090
<NUMBER-OF-SHARES-REDEEMED> (143649)
<SHARES-REINVESTED> 52829
<NET-CHANGE-IN-ASSETS> 1691799749
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 582534965
<OVERDISTRIB-NII-PRIOR> (421998)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 15925860
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 48125358
<AVERAGE-NET-ASSETS> 7382393721
<PER-SHARE-NAV-BEGIN> 25.77
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 8.08
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.14)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 31.75
<EXPENSE-RATIO> 0.61
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 031
<NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 1509825
<INVESTMENTS-AT-VALUE> 2016181
<RECEIVABLES> 28004
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 3949
<TOTAL-ASSETS> 2048141
<PAYABLE-FOR-SECURITIES> 55343
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 77
<TOTAL-LIABILITIES> 55420
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1322898
<SHARES-COMMON-STOCK> 6614
<SHARES-COMMON-PRIOR> 9246
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (7528)
<ACCUMULATED-NET-GAINS> 171180
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 506171
<NET-ASSETS> 1992721
<DIVIDEND-INCOME> 5890
<INTEREST-INCOME> 1494
<OTHER-INCOME> (749)
<EXPENSES-NET> (14091)
<NET-INVESTMENT-INCOME> (7456)
<REALIZED-GAINS-CURRENT> 179419
<APPREC-INCREASE-CURRENT> 476581
<NET-CHANGE-FROM-OPS> 648544
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (12575)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1136
<NUMBER-OF-SHARES-REDEEMED> (4643)
<SHARES-REINVESTED> 875
<NET-CHANGE-IN-ASSETS> 885954
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 227371
<OVERDISTRIB-NII-PRIOR> (72)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 7850
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 29385
<AVERAGE-NET-ASSETS> 1603527
<PER-SHARE-NAV-BEGIN> 13.15
<PER-SHARE-NII> (0.08)
<PER-SHARE-GAIN-APPREC> 6.59
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.51)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.15
<EXPENSE-RATIO> 1.77
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 032
<NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 1509825
<INVESTMENTS-AT-VALUE> 2016181
<RECEIVABLES> 28004
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 3949
<TOTAL-ASSETS> 2048141
<PAYABLE-FOR-SECURITIES> 55343
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 77
<TOTAL-LIABILITIES> 55420
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1322898
<SHARES-COMMON-STOCK> 109527
<SHARES-COMMON-PRIOR> 74874
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (7528)
<ACCUMULATED-NET-GAINS> 171180
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 506171
<NET-ASSETS> 1992721
<DIVIDEND-INCOME> 5890
<INTEREST-INCOME> 1494
<OTHER-INCOME> (749)
<EXPENSES-NET> (14091)
<NET-INVESTMENT-INCOME> (7456)
<REALIZED-GAINS-CURRENT> 179419
<APPREC-INCREASE-CURRENT> 476581
<NET-CHANGE-FROM-OPS> 648544
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (223035)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 24543
<NUMBER-OF-SHARES-REDEEMED> (5410)
<SHARES-REINVESTED> 15520
<NET-CHANGE-IN-ASSETS> 885954
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 227371
<OVERDISTRIB-NII-PRIOR> (72)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 7850
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 29385
<AVERAGE-NET-ASSETS> 1603527
<PER-SHARE-NAV-BEGIN> 13.16
<PER-SHARE-NII> (0.07)
<PER-SHARE-GAIN-APPREC> 6.58
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (2.51)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 17.16
<EXPENSE-RATIO> 1.78
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 041
<NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND - CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 1657782
<INVESTMENTS-AT-VALUE> 1957217
<RECEIVABLES> 69628
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 8926
<TOTAL-ASSETS> 2035778
<PAYABLE-FOR-SECURITIES> 41629
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 95
<TOTAL-LIABILITIES> 41724
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1547795
<SHARES-COMMON-STOCK> 23356
<SHARES-COMMON-PRIOR> 18840
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (5225)
<ACCUMULATED-NET-GAINS> 152095
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 299389
<NET-ASSETS> 1994054
<DIVIDEND-INCOME> 8643
<INTEREST-INCOME> 1987
<OTHER-INCOME> (1035)
<EXPENSES-NET> (14621)
<NET-INVESTMENT-INCOME> (5026)
<REALIZED-GAINS-CURRENT> 159890
<APPREC-INCREASE-CURRENT> 266664
<NET-CHANGE-FROM-OPS> 421528
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (180)
<DISTRIBUTIONS-OF-GAINS> (48541)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1337
<NUMBER-OF-SHARES-REDEEMED> (577)
<SHARES-REINVESTED> 3756
<NET-CHANGE-IN-ASSETS> 725484
<ACCUMULATED-NII-PRIOR> 822
<ACCUMULATED-GAINS-PRIOR> 267898
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 8145
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 28540
<AVERAGE-NET-ASSETS> 1664044
<PER-SHARE-NAV-BEGIN> 13.44
<PER-SHARE-NII> (0.04)
<PER-SHARE-GAIN-APPREC> 3.74
<PER-SHARE-DIVIDEND> (0.01)
<PER-SHARE-DISTRIBUTIONS> (2.56)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.57
<EXPENSE-RATIO> 1.78
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 042
<NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND - CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 1657782
<INVESTMENTS-AT-VALUE> 1957217
<RECEIVABLES> 69628
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 8926
<TOTAL-ASSETS> 2035778
<PAYABLE-FOR-SECURITIES> 41629
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 95
<TOTAL-LIABILITIES> 41724
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1547795
<SHARES-COMMON-STOCK> 113187
<SHARES-COMMON-PRIOR> 75343
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (5225)
<ACCUMULATED-NET-GAINS> 152095
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 299389
<NET-ASSETS> 1994054
<DIVIDEND-INCOME> 8643
<INTEREST-INCOME> 1987
<OTHER-INCOME> (1035)
<EXPENSES-NET> (14621)
<NET-INVESTMENT-INCOME> (5026)
<REALIZED-GAINS-CURRENT> 159890
<APPREC-INCREASE-CURRENT> 266664
<NET-CHANGE-FROM-OPS> 421528
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (841)
<DISTRIBUTIONS-OF-GAINS> (227152)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 21340
<NUMBER-OF-SHARES-REDEEMED> (1033)
<SHARES-REINVESTED> 17537
<NET-CHANGE-IN-ASSETS> 725484
<ACCUMULATED-NII-PRIOR> 822
<ACCUMULATED-GAINS-PRIOR> 267898
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 8145
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 28540
<AVERAGE-NET-ASSETS> 1664044
<PER-SHARE-NAV-BEGIN> 13.48
<PER-SHARE-NII> (0.04)
<PER-SHARE-GAIN-APPREC> 3.74
<PER-SHARE-DIVIDEND> (0.01)
<PER-SHARE-DISTRIBUTIONS> (2.56)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.61
<EXPENSE-RATIO> 1.78
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 051
<NAME> MFS INTERNATIONAL VALUE FUND CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 793,114
<INVESTMENTS-AT-VALUE> 987,984
<RECEIVABLES> 4,525
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 6,473
<TOTAL-ASSETS> 998,989
<PAYABLE-FOR-SECURITIES> 622
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 622
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 712,667
<SHARES-COMMON-STOCK> 81,564
<SHARES-COMMON-PRIOR> 70,135
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (4,637)
<ACCUMULATED-NET-GAINS> 95,760
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 194,577
<NET-ASSETS> 998,367
<DIVIDEND-INCOME> 10,091
<INTEREST-INCOME> 1,221
<OTHER-INCOME> (1,472)
<EXPENSES-NET> (9,245)
<NET-INVESTMENT-INCOME> 595
<REALIZED-GAINS-CURRENT> 101,565
<APPREC-INCREASE-CURRENT> 92,802
<NET-CHANGE-FROM-OPS> 194,962
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 4,280
<DISTRIBUTIONS-OF-GAINS> 212,682
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> (7,907)
<SHARES-REINVESTED> 19,336
<NET-CHANGE-IN-ASSETS> (135,512)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 221,069
<OVERDISTRIB-NII-PRIOR> 666
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,149
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 25,149
<AVERAGE-NET-ASSETS> 1,053,486
<PER-SHARE-NAV-BEGIN> 13.24
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 2.29
<PER-SHARE-DIVIDEND> (0.07)
<PER-SHARE-DISTRIBUTIONS> (3.23)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.24
<EXPENSE-RATIO> 1.78
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
<NUMBER> 052
<NAME> MFS INTERNATIONAL VALUE FUND CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 793,114
<INVESTMENTS-AT-VALUE> 987,984
<RECEIVABLES> 4,525
<ASSETS-OTHER> 7
<OTHER-ITEMS-ASSETS> 6,473
<TOTAL-ASSETS> 998,989
<PAYABLE-FOR-SECURITIES> 622
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 622
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 712,667
<SHARES-COMMON-STOCK> 12,977
<SHARES-COMMON-PRIOR> 15,488
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (4,637)
<ACCUMULATED-NET-GAINS> 95,760
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 194,577
<NET-ASSETS> 998,367
<DIVIDEND-INCOME> 10,091
<INTEREST-INCOME> 1,221
<OTHER-INCOME> (1,472)
<EXPENSES-NET> (9,245)
<NET-INVESTMENT-INCOME> 595
<REALIZED-GAINS-CURRENT> 101,565
<APPREC-INCREASE-CURRENT> 92,802
<NET-CHANGE-FROM-OPS> 194,962
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 286
<DISTRIBUTIONS-OF-GAINS> 14,192
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 3,786
<NUMBER-OF-SHARES-REDEEMED> (20,548)
<SHARES-REINVESTED> 1,287
<NET-CHANGE-IN-ASSETS> (135,512)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 221,069
<OVERDISTRIB-NII-PRIOR> 666
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 5,149
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 25,149
<AVERAGE-NET-ASSETS> 1,053,486
<PER-SHARE-NAV-BEGIN> 13.25
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 2.30
<PER-SHARE-DIVIDEND> (0.07)
<PER-SHARE-DISTRIBUTIONS> (3.23)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.24
<EXPENSE-RATIO> 1.78
</TABLE>